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Semiconductor Physics, Quantum Electronics & Optoelectronics. 2016. V. 19, N 4. P. 377-383.
How the phosphorus chains impact on the vibrational properties
of diphosphides ZnP2 and CdP2 at low temperatures
V. Lashkaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine
45, prospect Nauky, 03680 Kyiv Ukraine, e-mail: konstantin@shportko.com
Abstract. The temperature dependence of the vibrational modes in the diphosphides ZnP2 and CdP2 has been studied by employing IR reflectance spectroscopy within the 4…300 K temperature range in the polarized radiation. It has been demonstrated that decreasing the bond distance in the phosphorus chain at low temperatures causes an additional amount of anharmonicity of the corresponding modes, which is manifested in more pronounced temperature dependences of their frequencies and damping coefficients.
Keywords: diphosphide, single crystal, phosphorus chain, IR, phonon, anharmonicity, low temperatures.
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